An Error occurred while handling another error:
PDOException: SQLSTATE[HY000] [1040] Too many connections in /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php:719
Stack trace:
#0 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(719): PDO->__construct()
#1 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(638): yii\db\Connection->createPdoInstance()
#2 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(1059): yii\db\Connection->open()
#3 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(1046): yii\db\Connection->getMasterPdo()
#4 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(406): yii\db\Connection->getSlavePdo()
#5 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(430): yii\db\mysql\QueryBuilder->supportsFractionalSeconds()
#6 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(59): yii\db\mysql\QueryBuilder->defaultTimeTypeMap()
#7 /var/www/azzanox/web/vendor/yiisoft/yii2/base/BaseObject.php(109): yii\db\mysql\QueryBuilder->init()
#8 /var/www/azzanox/web/vendor/yiisoft/yii2/db/QueryBuilder.php(116): yii\base\BaseObject->__construct()
#9 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/Schema.php(217): yii\db\QueryBuilder->__construct()
#10 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Schema.php(249): yii\db\mysql\Schema->createQueryBuilder()
#11 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(876): yii\db\Schema->getQueryBuilder()
#12 /var/www/azzanox/web/vendor/yiisoft/yii2/db/ActiveQuery.php(328): yii\db\Connection->getQueryBuilder()
#13 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Query.php(287): yii\db\ActiveQuery->createCommand()
#14 /var/www/azzanox/web/vendor/yiisoft/yii2/db/ActiveQuery.php(304): yii\db\Query->one()
#15 /var/www/azzanox/web/frontend/controllers/MainController.php(91): yii\db\ActiveQuery->one()
#16 /var/www/azzanox/web/vendor/yiisoft/yii2/base/Controller.php(179): frontend\controllers\MainController->beforeAction()
#17 /var/www/azzanox/web/vendor/yiisoft/yii2/base/Module.php(534): yii\base\Controller->runAction()
#18 /var/www/azzanox/web/vendor/yiisoft/yii2/web/ErrorHandler.php(109): yii\base\Module->runAction()
#19 /var/www/azzanox/web/vendor/yiisoft/yii2/base/ErrorHandler.php(135): yii\web\ErrorHandler->renderException()
#20 [internal function]: yii\base\ErrorHandler->handleException()
#21 {main}

Next yii\db\Exception: SQLSTATE[HY000] [1040] Too many connections in /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php:649
Stack trace:
#0 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(1059): yii\db\Connection->open()
#1 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(1046): yii\db\Connection->getMasterPdo()
#2 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(406): yii\db\Connection->getSlavePdo()
#3 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(430): yii\db\mysql\QueryBuilder->supportsFractionalSeconds()
#4 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/QueryBuilder.php(59): yii\db\mysql\QueryBuilder->defaultTimeTypeMap()
#5 /var/www/azzanox/web/vendor/yiisoft/yii2/base/BaseObject.php(109): yii\db\mysql\QueryBuilder->init()
#6 /var/www/azzanox/web/vendor/yiisoft/yii2/db/QueryBuilder.php(116): yii\base\BaseObject->__construct()
#7 /var/www/azzanox/web/vendor/yiisoft/yii2/db/mysql/Schema.php(217): yii\db\QueryBuilder->__construct()
#8 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Schema.php(249): yii\db\mysql\Schema->createQueryBuilder()
#9 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Connection.php(876): yii\db\Schema->getQueryBuilder()
#10 /var/www/azzanox/web/vendor/yiisoft/yii2/db/ActiveQuery.php(328): yii\db\Connection->getQueryBuilder()
#11 /var/www/azzanox/web/vendor/yiisoft/yii2/db/Query.php(287): yii\db\ActiveQuery->createCommand()
#12 /var/www/azzanox/web/vendor/yiisoft/yii2/db/ActiveQuery.php(304): yii\db\Query->one()
#13 /var/www/azzanox/web/frontend/controllers/MainController.php(91): yii\db\ActiveQuery->one()
#14 /var/www/azzanox/web/vendor/yiisoft/yii2/base/Controller.php(179): frontend\controllers\MainController->beforeAction()
#15 /var/www/azzanox/web/vendor/yiisoft/yii2/base/Module.php(534): yii\base\Controller->runAction()
#16 /var/www/azzanox/web/vendor/yiisoft/yii2/web/ErrorHandler.php(109): yii\base\Module->runAction()
#17 /var/www/azzanox/web/vendor/yiisoft/yii2/base/ErrorHandler.php(135): yii\web\ErrorHandler->renderException()
#18 [internal function]: yii\base\ErrorHandler->handleException()
#19 {main}
Additional Information:
Array
(
    [0] => HY000
    [1] => 1040
    [2] => Too many connections
)

Previous exception:
yii\base\InvalidRouteException: Unable to resolve the request "2018/05/18/fiera-della-musica-2018-2/". in /var/www/azzanox/web/vendor/yiisoft/yii2/base/Module.php:543
Stack trace:
#0 /var/www/azzanox/web/vendor/yiisoft/yii2/web/Application.php(104): yii\base\Module->runAction()
#1 /var/www/azzanox/web/vendor/yiisoft/yii2/base/Application.php(392): yii\web\Application->handleRequest()
#2 /var/www/azzanox/web/frontend/web/index.php(17): yii\base\Application->run()
#3 {main}

Next yii\web\NotFoundHttpException: Pagina non trovata. in /var/www/azzanox/web/vendor/yiisoft/yii2/web/Application.php:116
Stack trace:
#0 /var/www/azzanox/web/vendor/yiisoft/yii2/base/Application.php(392): yii\web\Application->handleRequest()
#1 /var/www/azzanox/web/frontend/web/index.php(17): yii\base\Application->run()
#2 {main}